But delays and inefficiencies in air travel are due in large part to an outdated traffic-control system that still relies on slow, ground-based radar stations and repetitive voice communication.
不过航空运输延迟和低效的主要原因还是过时的空中交通管制——一套依靠地面控制、反应迟缓的雷达站和不断重复的语音通讯建立起来的体系。
Based on the study of radar signal processing technology and algorithm, a new signal processing system for ground PD radar is proposed in this paper.
本文在研究雷达信号处理技术和算法的基础上，设计了一种地面PD雷达信号处理系统方案。
This paper presents a project of modularization design for ground radar full digital servo system based on CAN bus.
介绍了一种基于CAN总线的地面雷达全数字伺服系统模块化设计方案。
The HF ground wave radar receiver system based on USB2.0 technique is introduced.
介绍了基于USB2.0技术的高频地波雷达接收机系统。
The paper is of some values of reference and guidance to the evaluation of jamming effect on the ground based netted radar system.
该文对研究评估对地面防空雷达网干扰能力具有一定的参考价值和指导意义。
Aimed at the clutter overlap of PD system applied to the ground-based low altitude radar, a designing method of a different PRF with respect to each interval of scanning time was proposed.
针对地面低空雷达应用PD体制的杂波重叠问题，提出了分时分重频的设计方法。
The system is reportedly 100 percent silent and extremely difficult to track by air on ground-based radar systems.
这种系统据称还是完全静音的，地基或空基雷达很难探测到。
The system is reportedly 100 percent silent and extremely difficult to track by air on ground-based radar systems.
这种系统据称还是完全静音的，地基或空基雷达很难探测到。
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